Health glossary · Reproductive Health

Hormone Replacement Therapy

HOR-mohn rih-PLAYS-ment THER-uh-peenoun phrase

A treatment that restores hormones your body produces less of during and after menopause.

Hormone replacement therapy (HRT) uses medications containing estrogen, progesterone, or both to relieve symptoms caused by the natural drop in hormone levels during perimenopause and menopause. It can reduce hot flashes, improve sleep, and protect bone density, though it also carries risks that vary by individual health history.

Part of speechnoun phrase
PronunciationHOR-mohn rih-PLAYS-ment THER-uh-pee
OriginGreek hormaein (to set in motion) + Latin replacere (to restore to place) + Greek therapeia (healing, service). Modern HRT was developed in the mid-20th century as a treatment for menopausal symptoms.

What is hormone replacement therapy?

During and after menopause, your ovaries produce significantly less estrogen and progesterone. That shift can bring on a range of symptoms — hot flashes, night sweats, vaginal dryness, disrupted sleep, and mood changes — that affect daily life in real and sometimes disruptive ways. Hormone replacement therapy works by supplementing those declining hormones to bring levels closer to where they were before menopause.

HRT comes in several forms: estrogen-only therapy is typically prescribed for women who have had a hysterectomy, while combined estrogen-progesterone therapy is recommended for women who still have a uterus (because estrogen alone can increase uterine cancer risk). These medications are available as pills, skin patches, gels, creams, sprays, and vaginal rings or tablets — giving you and your provider flexibility in choosing what suits your body and lifestyle best.

The decision to use HRT is deeply personal and should account for your full medical history. Research over the past two decades has clarified both its benefits — including meaningful protection against osteoporosis and, for some women, reduced cardiovascular risk when started early in menopause — and its risks, which include a modest increase in breast cancer risk with long-term combined use and a small increase in blood clot risk with oral forms. Your provider can help you weigh what matters most for your specific situation, and many women find that the right type and dose of HRT meaningfully improves their quality of life.

Why it matters

Menopause is not a disease, but its symptoms can genuinely disrupt your work, relationships, sleep, and sense of self. Knowing that HRT is an evidence-supported option — not just a last resort — can feel empowering. For women who experience severe menopausal symptoms, HRT often provides relief that other strategies cannot match.

HRT also plays a role in longer-term health. Estrogen loss accelerates bone thinning, so starting HRT early in menopause may help protect against osteoporosis and fracture. At the same time, understanding the breast cancer and blood clot considerations helps you make an informed, shared decision with your doctor rather than one driven by fear or incomplete information. Regular check-ins with your provider while on HRT — and honest conversations about how you feel — keep your care tailored to you as your needs evolve.

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